Question about Mitsubishi WD-52525 52" Rear Projection HDTV

7 Answers

No power after 1 min intial plug in

Have replaced bad caps-i plug in unit green light flashes for 1 min. then goes out none of the buttons on frent do anything---allso the light fan is not running when green light is flashing --any ideas
thanks willy, email at w55bb42@gmail.com

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  • 4 more comments 
  • wewilly Oct 30, 2008

    have allready replaced power board whats next thanks w55bb

  • wewilly Oct 31, 2008

    i have replaced power board and replaced bad caps on dm board and caps on signal board

    whats next thanks

    wewilly

  • wewilly Nov 05, 2008

    i have replaced power board and replaced bad caps on dm board and caps on signal board
    whats next thanks
    wewilly

  • wewilly Nov 05, 2008

    yes i have

  • wewilly Nov 06, 2008

    resisters seem ok ---on power board with pluged in on tabs i have tps 12 have 12.2 on tp -15 have -16.9 on tp +15 have +16.9 on tp 30 have 30.93 on tp 12 have .019 on tp 3.3 have -.008 on tp 5 have

    .838 hope this helps thanks wewilly

  • wewilly Nov 07, 2008

    thank you ---is there something on one of the other boards that activate the 12v on tp 12v

    thanks wewilly

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7 Answers

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Have you check out the Transistors in the Circuit, since most of bad transistors will causing problems as mentioned by you..

Incomplete circuit with faulty transistors, necessary to be replaced.

Posted on Nov 06, 2008

  • Puneet Jain
    Puneet Jain Nov 06, 2008

    After then, check out the Coils present on the Circuit board, on DM board and signal board panel. And if necessary replaced the faulty one.

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Something is definately short on your main board thats why the tv is not working. so check 1 by 1 from the short tracks,any burnt or bulged up capacitors,any ICs shorted out or burned from top,also check the tiny fuse on the main board if that fuse is blown out the tv will not become ON.if everything looks perfect.then check are these all electrical component connected to the board properly or any of them is loose.check out whole board.do dry/cold  solder to the main board let it dry for some period of time as the soldering joints holds the board properly and firmly.also check the power wire of the tv which goes in to the electric outlet if that is cut somewhere or not connected properly.as the power comes  but the picture will not come as the required current is not given to the tv.
thanks.

Posted on Nov 06, 2008

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You might have a short somewhere else causing the tv togo into auto shutdown mode which protects it from catching on fire. You will need to get this checked by a professional and they should tell you the problem and they should be able to fix it for you.

Posted on Nov 05, 2008

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Try also to check all the resistor there maybe there is an open or change value causing the voltaged trapped.

Hope may it help;

Regards;
VOTIT

Posted on Nov 05, 2008

  • LORETO LACARON
    LORETO LACARON Nov 07, 2008

    Yes, Mitsubishi can be very good about compensation on problems that are repetitieve and catastrophic. You need to be communicating with consumer relations and you need to be diligent and patient. My experienceis that in the end, Mits takes care of their customers better than most, even if the process is clumsy and at times very frustrating.

    This can be a more complicated problem than just changing the DM. There areseveral things going on in this chassis that we have not yet figured out. I just had one of this model that we did the following on:

    Changed the bulging caps on the DM.
    Changed the DM per Mitsubishi instructions.
    Changed the EEPROM.
    Changed the bulging caps on 4 boards in the set.
    Changed the reset ICs
    Changed the Signal Board.
    After none of this worked the soloution was to replace the entire chassis,which came in defective with a bad EEPROM. Mitsubishi paid for the parts.

    Unfortunately, Mits is not supporting component level repair on these boardsand we have only limited block diagrams for some circuits, not complete schematics. This means that we are not able to figure out exactly what is failing and troubleshoot the sets very effectively. Additionally, they don't have enough of the boards and the chassis is on backorder. They won't tell us what they are doing to fix them, so we are largely stuck waiting for expensive parts like an entire chassis. Mits is eating parts and in some cases labor when we could be field repairing them much more effectively if we just had schemaitcs and some info. Stupid, short-sighted policies, IMO.

    Keep calling customer relations, get file numbers, get tech log numbers from your servicer for any communication they have with Tech Support at Mitsubishi,get everyone's name that you talk to and keep good notes. Like I said, with patience and diligence, you can likely get some accomodation from Mitsubishi.How long the fix will last is uncertain.

    Also, be sure that you are using the coaxial line protection on your surge protector, and be sure that your in coming lines are grounded according to electrical codes.
    Re: Mitsubishi WD-52825 Blinking Status Light:
    The first thing to do is a system reset using the recessed button on the front panel.
    >>If that does not work, unplug the set and let it sit overnight.
    >>If it still does not come up .Here's something that might also be useful. After you turn on the set, and get the regular red blinky lights, holddown the Device and Menu buttons together for about 5 seconds.
    The Power light will start to flash in a two digit sequence.

    For example, 3 flashes, then 7 flashes = 37.

    Here are the error codes, and the corresponding problem:

    12 = No error detected, check power supply.
    32 = Lamp Cover is open.
    33 = Air filter cover is open.
    34 = Lamp abnormality
    36 = Light Engine (DMD or Lamp Fan stopped)
    37 = Exhaust or Lamp Ballast Fan stopped
    38 = Lamp Temperature High
    39 = DMD Temperature High
    41 = Short is detected
    44 = DVI cable between FMT and Engine disconnected
    IMAGES


    Regards;

    VOTIT

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Have you checked for broken solders? Proper connections, etc?

Posted on Oct 30, 2008

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  • Mitsubishi Master
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If you replaced power board capacitors check that they haven't blown again, in this case replace board.

Posted on Oct 30, 2008

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I did all this to my big screen, result the whole system was out of align, the cost started to exceed the value of the TV, bought a new LCD and have been happy ever since.

Posted on Nov 06, 2008

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